EP0855044A1 - High efficiency prism light guide with confocal parabolic cross section - Google Patents
High efficiency prism light guide with confocal parabolic cross sectionInfo
- Publication number
- EP0855044A1 EP0855044A1 EP96932413A EP96932413A EP0855044A1 EP 0855044 A1 EP0855044 A1 EP 0855044A1 EP 96932413 A EP96932413 A EP 96932413A EP 96932413 A EP96932413 A EP 96932413A EP 0855044 A1 EP0855044 A1 EP 0855044A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light guide
- light
- cross
- shapes
- sections
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/032—Optical fibres with cladding with or without a coating with non solid core or cladding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S385/00—Optical waveguides
- Y10S385/901—Illuminating or display apparatus
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/542,164 US5715347A (en) | 1995-10-12 | 1995-10-12 | High efficiency prism light guide with confocal parabolic cross section |
US542164 | 1995-10-12 | ||
PCT/CA1996/000678 WO1997014065A1 (en) | 1995-10-12 | 1996-10-10 | High efficiency prism light guide with confocal parabolic cross section |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0855044A1 true EP0855044A1 (en) | 1998-07-29 |
EP0855044B1 EP0855044B1 (en) | 2000-01-05 |
Family
ID=24162614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96932413A Expired - Lifetime EP0855044B1 (en) | 1995-10-12 | 1996-10-10 | High efficiency prism light guide with confocal parabolic cross section |
Country Status (9)
Country | Link |
---|---|
US (1) | US5715347A (en) |
EP (1) | EP0855044B1 (en) |
JP (1) | JP3064018B2 (en) |
KR (1) | KR100306516B1 (en) |
AU (1) | AU7123396A (en) |
CA (1) | CA2231795C (en) |
DE (1) | DE69606056T2 (en) |
NO (1) | NO981610D0 (en) |
WO (1) | WO1997014065A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9765949B2 (en) | 2013-07-26 | 2017-09-19 | Bright View Technologies Corporation | Shaped microstructure-based optical diffusers for creating batwing and other lighting patterns |
US10072816B2 (en) | 2013-06-19 | 2018-09-11 | Bright View Technologies Corporation | Microstructure-based optical diffusers for creating batwing and other lighting patterns |
US10302275B2 (en) | 2013-06-19 | 2019-05-28 | Bright View Technologies Corporation | Microstructure-based diffusers for creating batwing lighting patterns |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6031958A (en) * | 1997-05-21 | 2000-02-29 | Mcgaffigan; Thomas H. | Optical light pipes with laser light appearance |
US6130976A (en) * | 1998-04-15 | 2000-10-10 | 3M Innovative Properties Company | Coupling system for a light conduit |
WO1999053240A1 (en) * | 1998-04-15 | 1999-10-21 | Minnesota Mining And Manufacturing Company | Mounting assembly for a light conduit lighting system |
US6285814B1 (en) | 1999-09-30 | 2001-09-04 | 3M Innovative Properties Company | Light guide luminaire |
KR100356505B1 (en) * | 2000-01-22 | 2002-10-31 | 엘지전자 주식회사 | Epicycloidal light guide and illuminating facility |
US6481882B1 (en) | 2000-05-04 | 2002-11-19 | 3M Innovative Properties Company | Light pipe fixture with internal extractor |
US7064740B2 (en) * | 2001-11-09 | 2006-06-20 | Sharp Laboratories Of America, Inc. | Backlit display with improved dynamic range |
US20030156819A1 (en) * | 2002-02-15 | 2003-08-21 | Mark Pruss | Optical waveguide |
US6915062B2 (en) * | 2002-03-06 | 2005-07-05 | Federal-Mogul World Wide, Inc. | Illuminating waveguide |
CN1890989B (en) * | 2003-12-18 | 2012-08-08 | 夏普株式会社 | Dynamic gamma for a liquid crystal display |
US7532192B2 (en) * | 2004-05-04 | 2009-05-12 | Sharp Laboratories Of America, Inc. | Liquid crystal display with filtered black point |
US7602369B2 (en) * | 2004-05-04 | 2009-10-13 | Sharp Laboratories Of America, Inc. | Liquid crystal display with colored backlight |
US7612757B2 (en) * | 2004-05-04 | 2009-11-03 | Sharp Laboratories Of America, Inc. | Liquid crystal display with modulated black point |
US7872631B2 (en) * | 2004-05-04 | 2011-01-18 | Sharp Laboratories Of America, Inc. | Liquid crystal display with temporal black point |
US7777714B2 (en) * | 2004-05-04 | 2010-08-17 | Sharp Laboratories Of America, Inc. | Liquid crystal display with adaptive width |
US7505018B2 (en) * | 2004-05-04 | 2009-03-17 | Sharp Laboratories Of America, Inc. | Liquid crystal display with reduced black level insertion |
US8395577B2 (en) * | 2004-05-04 | 2013-03-12 | Sharp Laboratories Of America, Inc. | Liquid crystal display with illumination control |
US7023451B2 (en) * | 2004-06-14 | 2006-04-04 | Sharp Laboratories Of America, Inc. | System for reducing crosstalk |
US7556836B2 (en) * | 2004-09-03 | 2009-07-07 | Solae, Llc | High protein snack product |
US7898519B2 (en) * | 2005-02-17 | 2011-03-01 | Sharp Laboratories Of America, Inc. | Method for overdriving a backlit display |
US7525528B2 (en) * | 2004-11-16 | 2009-04-28 | Sharp Laboratories Of America, Inc. | Technique that preserves specular highlights |
US8050511B2 (en) * | 2004-11-16 | 2011-11-01 | Sharp Laboratories Of America, Inc. | High dynamic range images from low dynamic range images |
US8050512B2 (en) | 2004-11-16 | 2011-11-01 | Sharp Laboratories Of America, Inc. | High dynamic range images from low dynamic range images |
US8121401B2 (en) * | 2006-01-24 | 2012-02-21 | Sharp Labortories of America, Inc. | Method for reducing enhancement of artifacts and noise in image color enhancement |
US9143657B2 (en) * | 2006-01-24 | 2015-09-22 | Sharp Laboratories Of America, Inc. | Color enhancement technique using skin color detection |
US8941580B2 (en) * | 2006-11-30 | 2015-01-27 | Sharp Laboratories Of America, Inc. | Liquid crystal display with area adaptive backlight |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3532417A (en) * | 1967-07-20 | 1970-10-06 | Gen Electric | Noninverting optical reflecting device |
US3923381A (en) * | 1973-12-28 | 1975-12-02 | Univ Chicago | Radiant energy collection |
US4120565A (en) * | 1977-06-16 | 1978-10-17 | The United States Of America As Represented By The United States Department Of Energy | Prisms with total internal reflection as solar reflectors |
US4260220A (en) * | 1979-06-15 | 1981-04-07 | Canadian Patents And Development Limited | Prism light guide having surfaces which are in octature |
US4750798A (en) * | 1983-08-29 | 1988-06-14 | Canadian Patents And Developement Limited | Prism light guide luminaire |
US4805984A (en) * | 1985-11-21 | 1989-02-21 | Minnesota Mining And Manufacturing Company | Totally internally reflecting light conduit |
CA1268969A (en) * | 1986-01-15 | 1990-05-15 | Sanford Cobb, Jr. | Totally internally reflecting light conduit |
US4834495A (en) * | 1987-05-08 | 1989-05-30 | Minnesota Mining And Manufacturing Company | Collapsible light pipe |
US4787708A (en) * | 1987-05-08 | 1988-11-29 | Tir Systems Ltd. | Apparatus for continuously controlled emission of light from prism light guide |
US5309544A (en) * | 1992-03-31 | 1994-05-03 | Minnesota Mining And Manufacturing Company | Light pipe having optimized cross-section |
US5339382A (en) * | 1993-02-23 | 1994-08-16 | Minnesota Mining And Manufacturing Company | Prism light guide luminaire with efficient directional output |
-
1995
- 1995-10-12 US US08/542,164 patent/US5715347A/en not_active Expired - Lifetime
-
1996
- 1996-10-10 WO PCT/CA1996/000678 patent/WO1997014065A1/en active IP Right Grant
- 1996-10-10 JP JP9514588A patent/JP3064018B2/en not_active Expired - Fee Related
- 1996-10-10 KR KR1019980702073A patent/KR100306516B1/en not_active IP Right Cessation
- 1996-10-10 DE DE69606056T patent/DE69606056T2/en not_active Expired - Lifetime
- 1996-10-10 CA CA002231795A patent/CA2231795C/en not_active Expired - Fee Related
- 1996-10-10 AU AU71233/96A patent/AU7123396A/en not_active Abandoned
- 1996-10-10 EP EP96932413A patent/EP0855044B1/en not_active Expired - Lifetime
-
1998
- 1998-04-07 NO NO981610A patent/NO981610D0/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9714065A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10072816B2 (en) | 2013-06-19 | 2018-09-11 | Bright View Technologies Corporation | Microstructure-based optical diffusers for creating batwing and other lighting patterns |
US10302275B2 (en) | 2013-06-19 | 2019-05-28 | Bright View Technologies Corporation | Microstructure-based diffusers for creating batwing lighting patterns |
US9765949B2 (en) | 2013-07-26 | 2017-09-19 | Bright View Technologies Corporation | Shaped microstructure-based optical diffusers for creating batwing and other lighting patterns |
Also Published As
Publication number | Publication date |
---|---|
DE69606056T2 (en) | 2000-10-05 |
CA2231795A1 (en) | 1997-04-17 |
JP3064018B2 (en) | 2000-07-12 |
US5715347A (en) | 1998-02-03 |
KR19990063625A (en) | 1999-07-26 |
CA2231795C (en) | 2002-07-16 |
KR100306516B1 (en) | 2001-11-30 |
AU7123396A (en) | 1997-04-30 |
EP0855044B1 (en) | 2000-01-05 |
NO981610L (en) | 1998-04-07 |
NO981610D0 (en) | 1998-04-07 |
WO1997014065A1 (en) | 1997-04-17 |
DE69606056D1 (en) | 2000-02-10 |
JPH10512976A (en) | 1998-12-08 |
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